Fireproof metal door



a man-holes are located alongthe surrounding tnre fand leaving theinnermoulding of theA Patented Aug. 7, 1928.

Vi E D f) lEfS N 1,680,21 maar series,

trestan El, LEE, `or RLANGER, Kmv'ruok'v, AssIGNon To THE ancnrrno'runnnMETAL Pnonuc'rs, .INCoRroRA'rED, or VCoviner'rolv,LeKElvtruCKY, AACORPORATION or KENTUCKY.

rmnrnoorfrun'rnn Doon.

l kApplicationiled September 7, 1926. Serial No. 134,037'.`

'lhis ,invention relates to fire-proof metal doors that have hollowsheet-metal casings Vor Shells, made in `open rectangular-frame form'and adapted to accommodate lire-proof panels or inserts which areclamped alongtheir four edges between the channeled Ior grooved inneredges of the. said casings, and rivets vor bolts then .used in saidclamped iframe-*and-panel joint-parts of the door for securely:fastening or connecting lgether in door-unit form. L

Theobject of' he present invention is to .provide new Vand improvedmeans whereby joint made by the'v clamped edges of the doorpanel withthe door outerecasing and coinci Vdent witheach of the innerrivetor boltfas-x` tenings, each manvhole being closed, sealed,V .or dulyvcovered-over by means of a plane -or unelevated bridging film or. othersuitable filler, so that all of the said inner ffastenings areeiiectually concealed, and, each one ,v of suoli closing iilms ormembranes then adapted to be surfaced and finished to correspond withthe remaining outer surface of the said outer-casing,` and thus`absolutely eliminatingall" surface nails, screws, bolts and the likefrom the outer plane othe'door-struc- ,casing entirely free-from anydefacing methods or effects, and yet, j on the other hand, firmly and-permanently held together inea:y single'door-unit. form that .is `atonce; durable and inexpensive andV is otherwise adapted to .containerhouse the ,customary inflammable wooden or like casing ,coreorz iller'and anyincidentally-added ire-proof -plastic or like insulating-packingthat may gbevplaced withinthe cavities in the panelclampmoulding-edgesofthe casingyto subdue er 'prevent.fire-communication tothe said wooden core of the casing.

In the accompanying sheet of drawings, Figure 1 is a fragmentaryelevation showing the lower right-hand corner of a fire-proof metal doorembodying my invention; Fig. 2, a horizontal section, on line an, a,Fig. 1, but with the man-holes for access to the inner rivet `or boltastenings in normally-open condition, and with the parts of the door allassembled and ready for the inal closing or sealing of the man-holes toconceal theml and the contents within the panel-clamp portion of thedoor-casing; and Fig. 3, a view like unto Fig. 2, but with the saidman-holes them tov spaced, corresponding, outwardly-eXtending,

parallel, right-angled langefformations 8 that are adapted to formclamping-jaws for the skirt or outer edges of the customary panel V9 ofthe door, as best seen in both Figs. 2 Vand 3'. The panel `9is formed ofa thick slab or sheet of asbestos mill-board or likefire-proof material10 incased between outer sheet-'metal plates 11. A wooden or like core12 is inclosed by the hollow stiles and crossrails, 'anda centrallongitudinal groove or recess 13 is provided in the inner edge of thecore Vfor the reception of .the laterally-extendededges 14 of the saidplated-panel 9 that become firmly seated orfembedded therein when thestiles, cross-rails andipanel are assembled together and.` thus make upVa de- ,cided'single unit, asitrwere,of the entireV lire-proof metal doorstructure herein,

In order to irmly and securely. iastenlthe edges ofy the said.plated-panel in place bctweeir tlieclamping-jaws 8, 8, of the inneredgemouldingsV land 7 of the door-casing` I providebolts 15 thatpassthroughaligned holes made in the said clamping-jaws andthe skirt of thepanel, but, in order, also, to insert the said bolts intoconnecting-position, I 'fun ther provide aligned orifices or man-holes16 and 17 in the mouldings 6 and 7 that are sui?- iciently or amplylarge for the convenient handling of the bolts, including their iastening-nuts, and therequisite implements or tools, into and from theinterior of the cavities or chambers at both sides of the said skirt ofthe panel, lying ahead of the embedded edges of the panel in the woodencore or filler of the several stiles and cross-rails of the doorcasing.Thus, the beveled fore-end of a screw-driver is inserted or seated inthe cross-slot of the bolt-head and the socket-end of a holding ordetaining wrench is seated liu Y upon the nut at the other end of thebolt, in

tact With the said skirt of the panel Of course, if preferred5 the saidsocket-Wrench can be used'as a driver for thel nut on the screw-bolt andthe slotted head of the latter held from turning vby the seated beveledfore` end of the screw-driver, in clamping the skirt of the panel inplace in the inneiwedge mouldings of the stiles and cross-rails of thedoor-casing.

A plastic fire-proof iilling material 18 and 19 is then placed, ifdesired and deemed best.,T in-thev cavities at both sides of theboltchamber Wherever a bolt is located in the panel-fastenings toprevent fire communication to the inner Wood-cores and then a. coveringor sealing film or bridging-membrane of solder or the like practicallysightless clo-Y sure .20 is used to entirely plug-up or close theman-holes or orifices 16 and 17 Wherever they occur in the structure,the outer faces of 'such plugs or seals 20 being iiush with that of theseveral stiles and the cross-rails and the surfacing employedthereon, asWell as the same smoothing-up of the entire surface then done so as toefectually conceal the plugs from viewand imparting to the said entiresurface one of perfect uniformity and not defaced in any perceptiblemanner by protruding bolts or other panel connecting y or fasteningmeans.

The said fasteningmeans may, if desired, extend. tothe use of 1'ivets,lspot-Welding and other Well-known. methodsl that can all be :equallyWell accomplished or performed VVthrough the said man-holes or orifices16 and Y 17 in the inner-edge clampfmouldings of the door-casingy lclaim z- Y Y A 1'. In' a fire-proof metal door, the combina.-

Vtion of a rectangular' metallic shell having upright side-stilesandhorizontal upper and lower connecting cros`s-ra1ls, inouldingsV providedinspaced pairs along the-'inner edges of the said shell, spaced `pairsof-cparallel ange-formations along the inner edges of ',scribed. A Y, YY n* In testimony whereof I have hereunto-10o said Vmouldings and havingaligned pierced holes, cores'or fillers in said shell, longitudinelgrooves provided along the approximate center of the inner edges of saidcore members, aligned yman-holes made in the' said mouldin'gs inI"align'ment with said 'pierced holes inthe said flange-formations, aire- Y proof panel fitting Within the sight of said shell and havingholes in its skirt aligning' With-said moulding man-holes and adapted tobe set in 4clamping-iengagement with .said spaced pairs. offlange-formations .on the mouldingsand provided Withextended edges thatseat in jsaid longitudinal grooves alonfv the innerfedges of said.vcore-members7 an screw-bolts or the like passed through the said alignedman-holes Yand pierced. boltholes` into clamp-fastening engagement withthe said flange-formations, substantially as shownY and described- Y Y2; In a lire-proof metal door, the combination of a rectangular metallicshell 'having upright sidefstiles and horizontal connecting cross-rails7mouldings provided in spaced pairs along the vinner edgesof said'shellyspaced pairs of :parallel flangeffformations along the inner edgesofsaid mouldings and Y having aligned piercedholes, cores orflllcrs in`saidshell, grooves provided along the inr ner edges of said cores7aligned manholes madeV in saidmouldingsin alignment with said'pierc'edholes in said flange.-i'orinations,

a iiresproof panel fitting Withinthesight of Said shell and having holesin its skirt align-` ing with said manholes in themouldings and adaptedto be set in clamping-engage.. ment with said spaced pairs offiange-fo'rma` tions and provided With extended edges Vthat seat in saidgrooves. in the cores,.screvvbolts or thelike passed .through'the saidaligned holes into clampingsengagement with the said flangeformations,and sealing mem,

bran'es ofsolde'r, cement orthe like .inserted in fsaid mouldingmanholes with filler backing and providinga inished'surface Y iiushfand'in harmony Vwiththat .of theV substantially as shown and de moulding,

aiiixed my signature.

